Speccy 128k +3 (3 inch disks and everything!)
Amiga 500 (later upgraded to 1 whole megabyte)
Amiga 1200 (later upgraded to a 68030 CPU, 4MB RAM and a 500MB Hard drive)
Cyrix 133MHz PC with 32MB RAM, 1.7GB HDD, 2MB Video card
AMD K6-2 333MHz with 128MB, 6GB HDD, 8MB video card
Pentium 4 1.7GHz with 40GB HDD (later upgraded to 160GB and 80GB), 256MB (upgraded to 1GB) and 64MB Geforce 2 MX200 (upgraded to 128MB Radeon 9somethingorotherlowend)
The above is my current system, and I also have a 2GHz Dell Inspiron 256MB 40GB notebook.